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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include <stdlib.h> | 28 #include <stdlib.h> |
| 29 #include <utility> |
29 | 30 |
30 #include "v8.h" | 31 #include "v8.h" |
31 | 32 |
32 #include "compilation-cache.h" | 33 #include "compilation-cache.h" |
33 #include "execution.h" | 34 #include "execution.h" |
34 #include "factory.h" | 35 #include "factory.h" |
35 #include "macro-assembler.h" | 36 #include "macro-assembler.h" |
36 #include "global-handles.h" | 37 #include "global-handles.h" |
37 #include "stub-cache.h" | 38 #include "stub-cache.h" |
38 #include "cctest.h" | 39 #include "cctest.h" |
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375 | 376 |
376 // after gc, it should survive | 377 // after gc, it should survive |
377 heap->CollectGarbage(NEW_SPACE); | 378 heap->CollectGarbage(NEW_SPACE); |
378 | 379 |
379 CHECK((*h1)->IsString()); | 380 CHECK((*h1)->IsString()); |
380 CHECK((*h2)->IsHeapNumber()); | 381 CHECK((*h2)->IsHeapNumber()); |
381 CHECK((*h3)->IsString()); | 382 CHECK((*h3)->IsString()); |
382 CHECK((*h4)->IsHeapNumber()); | 383 CHECK((*h4)->IsHeapNumber()); |
383 | 384 |
384 CHECK_EQ(*h3, *h1); | 385 CHECK_EQ(*h3, *h1); |
385 global_handles->Destroy(h1.location()); | 386 GlobalHandles::Destroy(h1.location()); |
386 global_handles->Destroy(h3.location()); | 387 GlobalHandles::Destroy(h3.location()); |
387 | 388 |
388 CHECK_EQ(*h4, *h2); | 389 CHECK_EQ(*h4, *h2); |
389 global_handles->Destroy(h2.location()); | 390 GlobalHandles::Destroy(h2.location()); |
390 global_handles->Destroy(h4.location()); | 391 GlobalHandles::Destroy(h4.location()); |
391 } | 392 } |
392 | 393 |
393 | 394 |
394 static bool WeakPointerCleared = false; | 395 static bool WeakPointerCleared = false; |
395 | 396 |
396 static void TestWeakGlobalHandleCallback(v8::Isolate* isolate, | 397 static void TestWeakGlobalHandleCallback( |
397 v8::Persistent<v8::Value>* handle, | 398 const v8::WeakCallbackData<v8::Value, void>& data) { |
398 void* id) { | 399 std::pair<v8::Persistent<v8::Value>*, int>* p = |
399 if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true; | 400 reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>( |
400 handle->Reset(); | 401 data.GetParameter()); |
| 402 if (p->second == 1234) WeakPointerCleared = true; |
| 403 p->first->Reset(); |
401 } | 404 } |
402 | 405 |
403 | 406 |
404 TEST(WeakGlobalHandlesScavenge) { | 407 TEST(WeakGlobalHandlesScavenge) { |
405 i::FLAG_stress_compaction = false; | 408 i::FLAG_stress_compaction = false; |
406 CcTest::InitializeVM(); | 409 CcTest::InitializeVM(); |
407 Isolate* isolate = CcTest::i_isolate(); | 410 Isolate* isolate = CcTest::i_isolate(); |
408 Heap* heap = isolate->heap(); | 411 Heap* heap = isolate->heap(); |
409 Factory* factory = isolate->factory(); | 412 Factory* factory = isolate->factory(); |
410 GlobalHandles* global_handles = isolate->global_handles(); | 413 GlobalHandles* global_handles = isolate->global_handles(); |
411 | 414 |
412 WeakPointerCleared = false; | 415 WeakPointerCleared = false; |
413 | 416 |
414 Handle<Object> h1; | 417 Handle<Object> h1; |
415 Handle<Object> h2; | 418 Handle<Object> h2; |
416 | 419 |
417 { | 420 { |
418 HandleScope scope(isolate); | 421 HandleScope scope(isolate); |
419 | 422 |
420 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); | 423 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); |
421 Handle<Object> u = factory->NewNumber(1.12344); | 424 Handle<Object> u = factory->NewNumber(1.12344); |
422 | 425 |
423 h1 = global_handles->Create(*i); | 426 h1 = global_handles->Create(*i); |
424 h2 = global_handles->Create(*u); | 427 h2 = global_handles->Create(*u); |
425 } | 428 } |
426 | 429 |
427 global_handles->MakeWeak(h2.location(), | 430 std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234); |
428 reinterpret_cast<void*>(1234), | 431 GlobalHandles::MakeWeak(h2.location(), |
429 &TestWeakGlobalHandleCallback); | 432 reinterpret_cast<void*>(&handle_and_id), |
| 433 &TestWeakGlobalHandleCallback); |
430 | 434 |
431 // Scavenge treats weak pointers as normal roots. | 435 // Scavenge treats weak pointers as normal roots. |
432 heap->PerformScavenge(); | 436 heap->PerformScavenge(); |
433 | 437 |
434 CHECK((*h1)->IsString()); | 438 CHECK((*h1)->IsString()); |
435 CHECK((*h2)->IsHeapNumber()); | 439 CHECK((*h2)->IsHeapNumber()); |
436 | 440 |
437 CHECK(!WeakPointerCleared); | 441 CHECK(!WeakPointerCleared); |
438 CHECK(!global_handles->IsNearDeath(h2.location())); | 442 CHECK(!global_handles->IsNearDeath(h2.location())); |
439 CHECK(!global_handles->IsNearDeath(h1.location())); | 443 CHECK(!global_handles->IsNearDeath(h1.location())); |
440 | 444 |
441 global_handles->Destroy(h1.location()); | 445 GlobalHandles::Destroy(h1.location()); |
442 global_handles->Destroy(h2.location()); | 446 GlobalHandles::Destroy(h2.location()); |
443 } | 447 } |
444 | 448 |
445 | 449 |
446 TEST(WeakGlobalHandlesMark) { | 450 TEST(WeakGlobalHandlesMark) { |
447 CcTest::InitializeVM(); | 451 CcTest::InitializeVM(); |
448 Isolate* isolate = CcTest::i_isolate(); | 452 Isolate* isolate = CcTest::i_isolate(); |
449 Heap* heap = isolate->heap(); | 453 Heap* heap = isolate->heap(); |
450 Factory* factory = isolate->factory(); | 454 Factory* factory = isolate->factory(); |
451 GlobalHandles* global_handles = isolate->global_handles(); | 455 GlobalHandles* global_handles = isolate->global_handles(); |
452 | 456 |
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463 | 467 |
464 h1 = global_handles->Create(*i); | 468 h1 = global_handles->Create(*i); |
465 h2 = global_handles->Create(*u); | 469 h2 = global_handles->Create(*u); |
466 } | 470 } |
467 | 471 |
468 // Make sure the objects are promoted. | 472 // Make sure the objects are promoted. |
469 heap->CollectGarbage(OLD_POINTER_SPACE); | 473 heap->CollectGarbage(OLD_POINTER_SPACE); |
470 heap->CollectGarbage(NEW_SPACE); | 474 heap->CollectGarbage(NEW_SPACE); |
471 CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2)); | 475 CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2)); |
472 | 476 |
473 global_handles->MakeWeak(h2.location(), | 477 std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234); |
474 reinterpret_cast<void*>(1234), | 478 GlobalHandles::MakeWeak(h2.location(), |
475 &TestWeakGlobalHandleCallback); | 479 reinterpret_cast<void*>(&handle_and_id), |
| 480 &TestWeakGlobalHandleCallback); |
476 CHECK(!GlobalHandles::IsNearDeath(h1.location())); | 481 CHECK(!GlobalHandles::IsNearDeath(h1.location())); |
477 CHECK(!GlobalHandles::IsNearDeath(h2.location())); | 482 CHECK(!GlobalHandles::IsNearDeath(h2.location())); |
478 | 483 |
479 // Incremental marking potentially marked handles before they turned weak. | 484 // Incremental marking potentially marked handles before they turned weak. |
480 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); | 485 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); |
481 | 486 |
482 CHECK((*h1)->IsString()); | 487 CHECK((*h1)->IsString()); |
483 | 488 |
484 CHECK(WeakPointerCleared); | 489 CHECK(WeakPointerCleared); |
485 CHECK(!GlobalHandles::IsNearDeath(h1.location())); | 490 CHECK(!GlobalHandles::IsNearDeath(h1.location())); |
486 | 491 |
487 global_handles->Destroy(h1.location()); | 492 GlobalHandles::Destroy(h1.location()); |
488 } | 493 } |
489 | 494 |
490 | 495 |
491 TEST(DeleteWeakGlobalHandle) { | 496 TEST(DeleteWeakGlobalHandle) { |
492 i::FLAG_stress_compaction = false; | 497 i::FLAG_stress_compaction = false; |
493 CcTest::InitializeVM(); | 498 CcTest::InitializeVM(); |
494 Isolate* isolate = CcTest::i_isolate(); | 499 Isolate* isolate = CcTest::i_isolate(); |
495 Heap* heap = isolate->heap(); | 500 Heap* heap = isolate->heap(); |
496 Factory* factory = isolate->factory(); | 501 Factory* factory = isolate->factory(); |
497 GlobalHandles* global_handles = isolate->global_handles(); | 502 GlobalHandles* global_handles = isolate->global_handles(); |
498 | 503 |
499 WeakPointerCleared = false; | 504 WeakPointerCleared = false; |
500 | 505 |
501 Handle<Object> h; | 506 Handle<Object> h; |
502 | 507 |
503 { | 508 { |
504 HandleScope scope(isolate); | 509 HandleScope scope(isolate); |
505 | 510 |
506 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); | 511 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); |
507 h = global_handles->Create(*i); | 512 h = global_handles->Create(*i); |
508 } | 513 } |
509 | 514 |
510 global_handles->MakeWeak(h.location(), | 515 std::pair<Handle<Object>*, int> handle_and_id(&h, 1234); |
511 reinterpret_cast<void*>(1234), | 516 GlobalHandles::MakeWeak(h.location(), |
512 &TestWeakGlobalHandleCallback); | 517 reinterpret_cast<void*>(&handle_and_id), |
| 518 &TestWeakGlobalHandleCallback); |
513 | 519 |
514 // Scanvenge does not recognize weak reference. | 520 // Scanvenge does not recognize weak reference. |
515 heap->PerformScavenge(); | 521 heap->PerformScavenge(); |
516 | 522 |
517 CHECK(!WeakPointerCleared); | 523 CHECK(!WeakPointerCleared); |
518 | 524 |
519 // Mark-compact treats weak reference properly. | 525 // Mark-compact treats weak reference properly. |
520 heap->CollectGarbage(OLD_POINTER_SPACE); | 526 heap->CollectGarbage(OLD_POINTER_SPACE); |
521 | 527 |
522 CHECK(WeakPointerCleared); | 528 CHECK(WeakPointerCleared); |
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3621 for (int i = 0; i < 4; i++) { | 3627 for (int i = 0; i < 4; i++) { |
3622 heap->CollectAllGarbage(false); | 3628 heap->CollectAllGarbage(false); |
3623 } | 3629 } |
3624 | 3630 |
3625 // The site still exists because of our global handle, but the code is no | 3631 // The site still exists because of our global handle, but the code is no |
3626 // longer referred to by dependent_code(). | 3632 // longer referred to by dependent_code(). |
3627 DependentCode::GroupStartIndexes starts(site->dependent_code()); | 3633 DependentCode::GroupStartIndexes starts(site->dependent_code()); |
3628 int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup); | 3634 int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup); |
3629 CHECK(!(site->dependent_code()->is_code_at(index))); | 3635 CHECK(!(site->dependent_code()->is_code_at(index))); |
3630 } | 3636 } |
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